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Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells

Priyada V. Rajeev, Subashini Gnanasekar, Kannan Gothandapani, Raja Sellappan, George Jacob, Vimala Raghavan, Sudhagar Pitchaimuthu Orcid Logo, Prasanat Sonar, N. Krishna Chandar, Soon Kwan Jeong, Maqusood Ahamed, Saravanan Pandiaraj, Muthumareeswaran Ramamoorthy, Andrews Nirmala Grace

Materials Today Communications, Volume: 26, Start page: 102070

Swansea University Author: Sudhagar Pitchaimuthu Orcid Logo

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DOI (Published version): 10.1016/j.mtcomm.2021.102070

Abstract

The unique category of transition metal nitrides has an immense scope as an electron-driven catalyst in redox reactions. However, synthesizing metal nitrides without contamination is very challenging. The residues present in the catalyst might affect catalytic activity. This work reports a simple sy...

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Published in: Materials Today Communications
ISSN: 2352-4928
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56143
first_indexed 2021-01-28T10:34:50Z
last_indexed 2021-05-25T03:26:41Z
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spelling 2021-05-24T16:36:41.7891848 v2 56143 2021-01-28 Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells 2fdbee02f4bfc5a1b174c8bd04afbd2b 0000-0001-9098-8806 Sudhagar Pitchaimuthu Sudhagar Pitchaimuthu true false 2021-01-28 The unique category of transition metal nitrides has an immense scope as an electron-driven catalyst in redox reactions. However, synthesizing metal nitrides without contamination is very challenging. The residues present in the catalyst might affect catalytic activity. This work reports a simple synthesis of contamination-free nanoscale molybdenum nitride (Mo2N) powder by integrated wet chemical and thermal decomposition techniques at 800 ̊C. Systematic structural and morphological studies were done, which shows the spherical shape of -Mo2N nanoparticles. Electrochemical and photovoltaic characteristics were studied using cyclic voltammetry, electrochemical impedance spectroscopy (EIS), Tafel polarization and J-V characteristics. As a result of high electrolyte diffusivity, less charge transfer resistance, high electrochemical stability and catalytic activity, the nano Mo2N based DSSCs exhibits 5.3% efficiency, which is comparable to Pt-based device (6.4%) fabricated under the similar condition that is 83.7% of the performance offered by an expensive counter electrode. This simple synthesis method could enable low-cost mass production of Mo2N nanoparticles as counter electrodes in DSSC. The developed counter electrodes may be a suitable alternative for stable, efficient and low-cost DSSCs. Journal Article Materials Today Communications 26 102070 Elsevier BV 2352-4928 Mo2N, Electrocatalyst, Pt-fee catalyst, dye-sensitized solar cells, redox reactions 1 3 2021 2021-03-01 10.1016/j.mtcomm.2021.102070 COLLEGE NANME COLLEGE CODE Swansea University 2021-05-24T16:36:41.7891848 2021-01-28T10:32:15.6479383 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Priyada V. Rajeev 1 Subashini Gnanasekar 2 Kannan Gothandapani 3 Raja Sellappan 4 George Jacob 5 Vimala Raghavan 6 Sudhagar Pitchaimuthu 0000-0001-9098-8806 7 Prasanat Sonar 8 N. Krishna Chandar 9 Soon Kwan Jeong 10 Maqusood Ahamed 11 Saravanan Pandiaraj 12 Muthumareeswaran Ramamoorthy 13 Andrews Nirmala Grace 14
title Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
spellingShingle Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
Sudhagar Pitchaimuthu
title_short Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
title_full Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
title_fullStr Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
title_full_unstemmed Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
title_sort Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
author_id_str_mv 2fdbee02f4bfc5a1b174c8bd04afbd2b
author_id_fullname_str_mv 2fdbee02f4bfc5a1b174c8bd04afbd2b_***_Sudhagar Pitchaimuthu
author Sudhagar Pitchaimuthu
author2 Priyada V. Rajeev
Subashini Gnanasekar
Kannan Gothandapani
Raja Sellappan
George Jacob
Vimala Raghavan
Sudhagar Pitchaimuthu
Prasanat Sonar
N. Krishna Chandar
Soon Kwan Jeong
Maqusood Ahamed
Saravanan Pandiaraj
Muthumareeswaran Ramamoorthy
Andrews Nirmala Grace
format Journal article
container_title Materials Today Communications
container_volume 26
container_start_page 102070
publishDate 2021
institution Swansea University
issn 2352-4928
doi_str_mv 10.1016/j.mtcomm.2021.102070
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description The unique category of transition metal nitrides has an immense scope as an electron-driven catalyst in redox reactions. However, synthesizing metal nitrides without contamination is very challenging. The residues present in the catalyst might affect catalytic activity. This work reports a simple synthesis of contamination-free nanoscale molybdenum nitride (Mo2N) powder by integrated wet chemical and thermal decomposition techniques at 800 ̊C. Systematic structural and morphological studies were done, which shows the spherical shape of -Mo2N nanoparticles. Electrochemical and photovoltaic characteristics were studied using cyclic voltammetry, electrochemical impedance spectroscopy (EIS), Tafel polarization and J-V characteristics. As a result of high electrolyte diffusivity, less charge transfer resistance, high electrochemical stability and catalytic activity, the nano Mo2N based DSSCs exhibits 5.3% efficiency, which is comparable to Pt-based device (6.4%) fabricated under the similar condition that is 83.7% of the performance offered by an expensive counter electrode. This simple synthesis method could enable low-cost mass production of Mo2N nanoparticles as counter electrodes in DSSC. The developed counter electrodes may be a suitable alternative for stable, efficient and low-cost DSSCs.
published_date 2021-03-01T19:59:34Z
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score 11.04748

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